Wharf.



W. HAGENBUCH.

WHIAHF.

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Patented Apr. 15,1919.

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WALTER. HAGENBUCH, 0F MARTINEZ, CORNIA, A

` CALIFORNIA, A CQBPOMTION 0F CALIFO To all 'whom t may concern:

Be it known that I, WALTER HAGENBUCH, a citizen of the United States, `residin at Martinez, in the4 county of Contra osta and State of California, have invented a i 'ture whichis Aable to absorb the impact of landing vessels without transmitting this impact to the main body of the wharf. It is essential that this forestructure be flexible enough to receive a normal impact without injury either toitself or the Ilanding" vessel.-

These requirements are the betterfulilled the bigger the allowable movement and the bigger the ultimatejhorizontal load the forestructureis able-to resist.. It has been common practice to usev vertlcal piles supported by solid connected brace piles,

horizontally and this 'construction may withstand a big load, but it cannot absorb much of the energy stored in the moving vessel because `it is only able to movea very short distance without the brace piles or the connection between the brace iles and vertical -iles being overstresserl) and, destroyed.

ertical piles in two rows arranged in stag gered relation 'to each other are commonly used for ferry slips and like construction.

rlhis construction will allow considerable v movement, but the horizontal load atnormal blending stress of the piles is 4relatively small, compared to the number of piles used.

Vlith my construction I propose to use a forestructure consisting of a serles of vertical piles spaced a art from the main structure ofthe whar the vertical piles being connected by horizontally arranged timbers,

the Vertical piles having connected thereto,

in slidable relation, brace piles diagonally arranged with respect vto the vertical piles and elastic means for governing the relation of the vertical piles with the associated Such construction destroys a avery large number of foot pounds more lenergy t angeither of` the constructions above referred' to, assuming the piles are stressed the same amount.

l Other objectsand advantages will appear hereinafter from the following description.

Speoication of Letters Patent. application mea June 1o, 191s. serial up. esame.

Patented Apr. 15, 1919.

I Referring to the drawings, which are for illustrative purposes only,

Figure 1 1s a plan view of a portion of a wharf embodying a form of my invention.

Fig. isla vertical sectional view on line Fig. 3 is a vertical sectional view on line 3 3, Fig. 1.

Fig. 4 is an enlarged vertical sectional iew 2of a portion of the wharf shown in Fig. 5 is a face view of a vertical pile shown in Fig. 4, the brace pile being omitted. IFig. 6y is a horizontal sectionalview on line 6 6, Fig. 4.

11 designates the wharf proper supported on suitable vertical lpiles 12, braced by means of suitable tim ers 13, and 14 designates in general the shock absorber or forestructure of the wharf proper. This shock absorber consists of a series of vertical piles 16 spaced apart and independent from the wharf proper 11 and is arranged on both sides of the wharf as shown in Figs. 1 and 2. The vertical piles 16 are connected together by means of horizontally disposed timbers 17 secured to the vertical piles 16 by means of suitable bolts 18. Arranged in association witheachA vertical pile 16 is a .brace pile 2O diagonally disposed and eX- tending downwardly and inwardly from its upper end, the upperl end of the brace pile as indicated at'21 in Fig. 6 le which engages a ortion of of the vertical pi e 16. 22 n0 24 designates horizontally disposed head 95 timbers which are seated upon the to connected thereto by rift the brace piles, bolts 25.'

- yEach 'vertical 'pile 16 hassecuredto its inner face by means of bolts 26 a plate or bracket 27, the upper end o which forms an eye 28 for reciving the lower end 29 of a U s aped tie rod 30. The two legs 31 of the rod 30 extend upwardly throu h. openings 32 formed in the timbers 24. onfned between plates 33 and 34 on the upper ends of` the rod 30 "are coiled springs 35 and 36, bein separated by a spaclng late 37, the plate 37 ein for the purpose o reventin buckling an smashing o the coi' s. 38 designates 4chain 40, which,

springs,

the springs .would allow about double the nuts on the upper ends of the rod 30 by means of which the springs are confined etween the plate 33 and the plate 34, the pl'ate 34 being seated on the upper face of the timbers 24 above referred to. V

Each vertical pile 16 is also connected to its associated brace pile 20 by means of a in the form shown, has one end connected to one .of the bolts 26 and the other end connected to one of the bolts 23, which chain serves to kee the vertical ile in its vertical position W en not horizontally loaded, that is, the chain keeps the y if.. vertical pile from leaning outwardly and limits `the forward movement caused by the initial compression 'of the sprin 42 designates a butler, of any common orm of construction, arranged horizontally along the outside of the vertical pilesr 16, being supported thereon in any suitable'manne'r, as by a chain indicated at 43. y

It is to be understood that similar brace piles may be used on the wharf proper construction as shown in Fig. 2 at 50, if so desired.

When the vertical piles 16 receive an impact due to a vessel landin against the buffers 42 the movement of t e upper ends.` of the vertical piles Vinwardly causes a compression of the springs 35 and 36 which takes place due to the relative movement between the vertical piles brace piles and the timbers 24 thereon sliding on the inner faces which action shortens the distance between the timbers 24 and the plates 33 thereby compressing the springs and taking up the load. In the event the load or impact is suddenly removed, as when a vessel quickly moves away from contact with from their associated brace vantage of this being that the vertical for the same amount of deflection'off.'

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horizontal deiection of the .piles as compared to any other arran ment of the spring.

Another advantage o arran' sarily have to be parallel with leach other.V the direction of the brace piles as well as the direction of the horizontal movement may vary over a consider-` ableY angle which would not be true in usingy horizontally arranged springs because the movement in such case has to be in the direc- I tion of the axis ofthe spring, and the latter have to'be parallel to each other.v In usin vertically arranged springs the movement o the springs is vertical regardless of the horilzontal direction of the movement.

`and the brace piles, the' of the vertical piles the buii'ers 42,' the chains 40 prevent the vertical piles 16 from 'n the springs .nectingsaid piles,

as shown is that the brace'pi es. o not necesconnected to the struczontally with relation to the connected end.

This is important because it avoids lateral displacement which occurs when both ends of the spring are connected to a structure,-

when one end has a tendencyto move at an angle to the axis of the springs.

What I claim is: 1

A1.In` Ia wharf structure,- a vertically arrangedpile, a diagonally arranged brace pile for said vertical pile, said brace .pile having its upper end in sliding relation to the vertical pile, and elastic means for holding the vertical pile in such relation to the brace pile'. l

2. In a ing a series of vertically arranged sion4 springs on the brace pi es,` and means `on the vertical piles for engaging said springs to compress the springs by movement of the vertical piles. y l

3. In a wharf,a fore-structure comprising a series of vertically 'arranged piles, brace piles coacting with the vertical piles each having .their upper end in sliding engagement with its ,associated vertical pile, vertically disposed coiled'springs on the upper end of each brace pile, and means on the vertical piles engaging said springs to compress the springs 4by cal piles.

movement of. the' vertiwharf, a fore-structure .compris- V Piles. -meaiis for connecting said piles together,

4. Ina wharf, a fiore-structure comprising i aseries' ofverticalpiles, timbers connecting said piles, brace piles coacting with the vertical piles having their upper ends in sliding engagement with the vertical. iles, head timbers on tlieupper vend of said race piles connecting .said race pilestogether, Acoiled springs vertically arranged on said head `ti4 bers, afplate .on the upper end of said secured to said 'vertical g said plate to .compress said 'y movement of the vertical piles.

y, cii a wharf, a fore-structure comprising yai series ofA vertical piles, timbers conbrace piles for said vertheir upper ends in' slidtical piles having l head ing engagementl with; the vertical timbers on the u perend of said race piles together, coiled s rings vertically arraiiged-. on said head connecting said race piles timbers, .a llate on the upper. end of said springs, red-'to s secu said vertical piles engaging said plate to 'compress said springe b 'movement ofthe vertical piles, and a c ain connected to the vertical piles and l their associated brace piles. p fore-structure compris-` 6. In `a w, a ing a series of vertical pil timbers connecting said piles, brace piles for said vertical piles having their upper end in sliding engagement with the vertical piles and extending diagonally downwardly and inwardly from their upper end, timbers connecting the upper ends of said brace piles, .vertically disposed coiled springs on timbers connectin said brace piles, a U- shaped member plvotally connected at its closed end to the vertical pile and having its the open ends extending through said coiled springs, a plate on the upper end of said springs engaged by the open ends of the U member to compress said springs by movement of the vertical piles.

In testimony whereof, I have hereunto set my hand at Martinez, day of May, 1918.

WALTER HAGENBUCH,

california, this 29th 

